As a user, I need updated navigation/form design terms in the introduction course and the documented procedures most  frequently used

### Description

After the change from "prosess" and "sidegruppe" to "arbeidsflyt" and "oppgave", we need to update the relevant documentation, especially "Kom i gang". I will investigate this during "the easter days" next week.

### Additional Information

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### Tasks

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### Acceptance Criterias

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